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Best Bacteria Essays

Bacterial Smears Are Fixed before Staining to?
Answer
It is important to heat fix the bacterial smear before staining so as to, kill the bacteria, firmly adhere the smear on to the microscopic slide to prevent washing off during staining, and to allow the sample to readily take up the stain.
Reference:
www2.hendrix.edu
What is the purpose of heat- fixing the smear?
It helps the cells adhere to the slide so that they can be stained.
The purpose of heat fixing is to kill the organisms...

CALIFORNIA STATE SCIENCE FAIR
2005 PROJECT SUMMARY
Name(s)
Hannah N. Zimmerman
Project Number
J1341
Project Title
The Effect of Non-Antibacterial and Antibacterial Cleansers on E. coli,
P. aeruginosa, and S. aureus Growth
Abstract
Objectives/Goals
The objective is to determine which of the eight types of disinfectant products is most effective in limiting
the growth of bacteria strains of E. coli, P. aeruginosa and S. aureus.
Methods/Materials
The experiment was...

Bacterial Contamination
April 15, 2013
Bacteria Contamination
The definition of bacterial contamination is food contamination refers to foods that are spoiled or tainted because they either contain microorganisms, such as bacteria or parasites, or toxic substances that make them unfit for consumption
This is very serious and people should take more precaution, food contamination is a serious because it results in foodborne diseases that each year affect an estimated seventy-six...

Bacteria are the most numerous type of microorganism found in the rhizosphere of the soil. They produce secondary metabolites which are capable of producing antibiotic which eventually inhibit or kill bacteria.
The rhizosphere region of the soil is a highly favorable habitat for the proliferation, activity and metabolism of numerous microorganisms. The magnitude of this area depends on the plant and the size of the roots that the plant possesses. Bacteria are among the microorganisms living in...

344 Words | 1 Page

All Bacteria Essays

Unit 7
Introduction
In this piece of coursework, there are few amounts of ideas and experiments that I could achieved of which different products to test for my concluding idea. The type of bacteria that I am going to discuss and chosen is E-coli. I will also going to research the effectiveness of antibacterial cleaning products, for instance sanitizer. I will also, research which is the most effective product for the house hold and some other work places.
Background Information
What...

﻿ Microorganisms are tiny, small living things which can not be seen with eyes. They spread everywhere around the world. Most people think that microorganisms are harmful to the environment. Humans exploit these small living things hundreds of years ago. Science has developed and scientists have established new science related to microorganisms, it is called microbiology. In this essay, I will talk about one of the oldest and most widespread microorganisms in our planet, bacteria. Bacteria...

A very important technique in Microbiology laboratories is identifying unknown bacteria cultures. Unknown identification is used for practical purposes, such as diagnosing diseases or determining treatment of an infection. Microbiologists identify unknown bacteria to determine new and emerging infectious diseases and current diseases to determine if any kind of treatment or antibiotics can be used. Some bacteria do not have distinguishing morphological features, so there are different kinds...

1. How abundant was oxygen in the early atmosphere?
2. What evidence do scientists have that the oxygen content of our atmosphere has increased since
the earth’s origin?
3. Why is oxygen more abundant in the atmosphere today?
4. What are stromatolites?
5. What do scientists think is implied by the presence of stromatolites in Precambrian rock?
6. What is ozone and how is it produced?
7. Why is ozone important to life today?
8. What effect did increased levels of oxygen in the atmosphere...

Acidophillic Extremophile: Lactobacillus acidophilus
Imagine a harsh winter with winds roaring outside and the shutters banging fiercely against the side of the house. Now imagine walking along a dessert as the sun beats down from above, and the glare from the sand is almost unbearable. Humans have adapted to these types of environments through technology and simplicities. Yet a microorganism calls places like these “home”. These microbes are called extremophiles, prospering in extreme...

Bacteria and Archaea
The Archaea are presently recognized as one of the two main domains of prokaryotes. The majority of genes that indicate Archaea to be different from Bacteria are for information transfer processes such as DNA replication, transcription and translation. Of these, DNA replication machinery appears to be most different between the two domains. In terms of transcription, the core subunits of the RNA polymerase are the same in Bacteria and Archaea, but archaea also contains...

Introduction:
Biological organisms are classified uniformly in order to easily categorize and identify organisms. This classification, or taxonomy, uses the genus name followed by the species name, in Latin. By having a universal method of identifying bacteria allows for all scientists from any part of the world to identify the same species in an identical manner allowing for a precise of classification.
Bacteria are distributed throughout the world in almost every conceivable habit. Bacteria...

Isolation of Bacteria in our Physical Environment
Introduction:
The purpose of the lab is to apply what has been learned so far in Microbiology, and use it to collect and examine microbial species from the physical environment. The physical environment around the lab will be utilized to find out the variety of different microbial species growing in and around the lab. This investigation will help in preparation for the individual projects that will be done at the end of the semester....

Penicillin Changed the World
Imagine life without antibiotics, people dying of a whooping cough, a minor wound or even a simple infection. Until the accidental discovery of penicillin by Alexander Flemming, life was like this. The positive effects for the discovery of penicillin were the many medical advancements made both therapeutically and medicinally. Economically, people were living longer lives and populations were growing more rapidly. Socially, people were able to interact without...

Amber McMillian
May 26, 2009
Bacterial Vaginosis
This is a vagina condition also referred to as Gardnerella Vaginitis that can produce vaginal discharge that is a result from an overgrowth of normal bacteria. This will cause a woman to have a vaginal discharge with a foul odor. It is not dangerous but it can cause bad symptoms. If any woman has this problem they should also be checked for more serious infections such as Chlamydia and Gonorrhea.
The normal symptoms are excessive vagina...

Virus and Bacteria
Virus - A virus is a capsule of protein that contains genetic material. A virus cannot reproduce on its own; it must infect a living cell to grow.
Bacteria - Bacteria are one-celled organisms that live on their own. They can multiply and reproduce by subdivision
Bacteria and viruses cause many of the diseases we are familiar with and may sound synonymous; they are greatly different from each other.
[pic]
o They differ greatly in size. The biggest viruses are...

CHAPTER TWO
Beneficial bacteria in the environment and their uses.
In today’s world, the environment and its related issues are steadily gaining a lot of importance. Some bacteria are helpful and are used to obtain balance in the environment.
It has been seen that helpful bacteria are useful in dissolving organic sludge from water, breaking down the growth of algae, reducing the various noxious odours such as hydrogen sulfide odours, reducing ammonia levels, promoting faster growth of fish in...

Identification of Unknown Bacteria
Abstract
The focus of this experiment was to identify unknown bacteria. The identification of unknown bacteria produces benefits for many aspects of the research of microorganisms and helps physicians correctly treat patients. Multiple biochemical tests were performed to provide the fermentation abilities, presence of certain enzymes, and certain biochemical reactions. Qualitative observations were made on the tests, which were compared to...

Microbiology is the study of microorganisms which must be viewed with the aid of a microscope or electron microscope.
The importance of microbiology includes: used in biomedical research, creation of medicines, environmental applications and new research tools.
Disease causing organisms include: protists, bacteria, viruses and other microorganisms.
Bacteria are important for fixing N2 in a usable form for plants.
Bacteria and some fungi are important in decomposition and...

Microbial Diversity and Ubiquity
Microorganisms are microscopic organisms that are so small that that they can only be visualized by the aid of a compound-brightfield microscope. While we generally cannot see individual microorganisms with the naked eye, they are present in virtually every habitat known to man. Microorganisms can be prokaryotic—the bacteria or eukaryotic—the algae, protozoa or fungi. While viruses are acellular they are also studied in the scope of microbiology...

Isolation and identification of an unknown bacterium
Pillay, Esmerelda (209504371)
School of Biochemistry, Genetics and Microbiology
Department of Microbiology
University of Kwa-zulu Natal
25 October 2010
ABSTRACT
Different types of bacteria in various forms are found all around us, and it is a microbiologist’s job to be able to identify these bacteria. Using various staining techniques and physiological tests, an isolated bacterium can be identified. In this experiment, a single...

MBK – Lab Report
Name: Katie Nave
Bacterial Morphology
Part 1: Viewing Prepared Slides of Common Bacterial Shapes Familiarize yourself with each morphological type to use as a comparative tool for the remainder of the activity. Record your observations. Part 2: Disinfecting Your Area to Use Live Organisms :
Part 3: Viewing Live Organisms – Wet Mount Preparation Record your observations. It was hard to tell what I was looking at. There were a number of amoeba shaped cells of varying...

Observing Bacteria
Kelli Jo Simco
Microbiology
Due: 2/8/13
Abstract: Microscopes are fragile instruments that must be handle with extreme caution as they can produce high quality results when observing the smallest specimens on earth. A microscope must be properly cleaned before use and storage. The different objectives allow for a range of observations. At the highest objectives, the resolution can easily be lost which is why the oil immersion lens is used to minimize refraction....

Bacteria are among the oldest species in the world.They both incerease in number and comply with nature very quikly so,they maintain their species.Therefore,bacteria have been the most common type of species according to number.Hence,bacteria had been classified in order to make analysis.easily.Bacteria can be classified into three main categories on the basis of their nurition:saprophytic,parasitic and chemoautotrophic bacteria.
The Saprophytic bacteria are the first type of...

Identifying Unknown Bacteria Using
Biochemical and Molecular Methods
Beginning of Instructor Pages
Instructor Pages - - 3
Purpose
The purpose of this lab is to introduce a variety of lab techniques to
students working on the common problem of identifying an unknown bacterium.
This lab helps students develop an understanding of the biochemical and
molecular differences in bacteria and introduces the concept of identifying
species based on characeristic gene sequences. Students work...

"Hunting the Nightmare Bacteria” was aired on October 22, 2013. Frontline investigates the increasing amount of potentially deadly antibiotic resistance bacteria. Answer the questions below. Episode can be viewed at: HYPERLINK "http://www.pbs.org/wgbh/pages/frontline/hunting-the-nightmare-bacteria/"http://www.pbs.org/wgbh/pages/frontline/hunting-the-nightmare-bacteria/
What is community associated MRSA?
MRSA infections in healthy people who have not been hospitalized or had a medical...

Gut Bacteria
In today’s world, many people have a very negative connotation when they hear the word “bacteria”. Bacteria have been the cause to many diseases, however bacteria do have some benefits and uses. There are thousands and thousands of different types of bacteria in the world and one group of bacteria, Gut Flora, has become evident in the bacterial community for being beneficial. Gut Flora is a group of bacteria that consists of microorganisms that live in the digestive tracts of...

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Bacteria and Archaea
Bacteria and Archaea
All single-celled organisms in the Bacteria and Archaea domains are referred to as prokaryotes. Prokaryotes are organisms whose genetic material is not contained within a nuclear envelop. These cells are profoundly important to the environment, medicine, and industry. (Postlethwait & Hopson, 2010, p. 196)
Bacteria and Archaea are similar in shape, size, and appearance. They are both found occurring as rods (bacilli), spheres...

MANIPULATION OF BACTERIA
INTRODUCTION:
In this experiment that we performed, there were many methods that were used to help us manipulate and identify the bacteria E.coli on a MacConkey agar plate. The first part of the experiment involved the methods of manipulating, identifying and counting the bacteria and the second part was to find out whether the bacteria E.coli was the only type found in the given area by gram staining.
E.coli was the chosen bacteria for this type of experiment. It is...

Bacterial Growth at Missouri Valley’s Collins Science Center
Introduction Bacteria is everywhere not only in our household but in our schools. As a group we chose four different areas of the school to swab with a sterile cotton swab. We wanted to test how clean the facilities were and how much bacteria there were. The four places we chose to swab were the fire alarm, a door handle in the hallway, a classroom’s door knob and the stair case hand rail. Our hypothesis was that the door knob...

Introduction-
This lab experiment serves as a model for community succession using bacterial colonies as the model. A bacterial colony grows from a single bacterium and is composed of millions of cells. Each colony has distinctive colony morphology: size, shape, color, consistency, and color. Community succession is a phenomenon observed in the organizational hierarchy of all living organisms. Community succession is not limited to bacterial colonies, but spans the entire community of...

Virtual Bacterial Identification Introduction
KADEN FUNK PERIOD 5
http://www.hhmi.org/biointeractive/bacterial-identification-virtual-labWelcome to the Virtual Bacterial Identification Lab. The purpose of the lab is to familiarize you with the science and techniques used to identify different types of bacteria based on their DNA sequence. Not long ago, DNA sequencing was a time-consuming, tedious process. With readily available commercial equipment and kits, it is now routine. The...

ANALYSIS OF BACTERIA GROWTH
Abstract
Bacteria can be found everywhere on the earth. Bacteria are single-celled organisms that lack a nucleus, mitochondria, and chloroplasts and are surrounded by a cell wall containing a peptidoglycan layer. They are defined by their small size and wide range of shapes.
In this experiment we separated organisms in a mixed culture to study the colony morphology and physical characteristics and determine which organism was present in higher numbers, as...

INTRODUCTION
The environments of Earth include conditions in which physical and chemical extremes make it very difficult for organisms to survive. Conditions that can destroy living cells and biomolecules include high and low temperatures; low amounts of oxygen and water; and high levels of salinity, acidity, alkalinity, and radiation. Examples of extreme environments on Earth are hot geysers and oceanic thermal vents, Antarctic sea ice, and oxygen-depleted rivers and lakes. Organisms that have...

﻿Morales, Marinel M. Dr. Annie Cu Gallardo
BSE-Biological Sciences III-3 Microbiology (Lecture)
Microbiology Written Report
REPORT NO. 1
Prokaryotes: Bacteria
Most of us have been conditioned to think of bacteria as invisible, potentially harmful little creatures. Actually, relatively few species of bacteria cause disease in humans, animals, plants, or any other organisms. In fact, all organisms made up of eukaryotic cells probably evolved from bacteria-like organisms, which were...

I. Definition:
Impetigo is a skin infection caused by bacteria. It is most common in children and is contagious. Impetigo forms round, crusted, oozing spots that grow larger day by day. The hands and face are the favorite locations for impetigo, but it often appears on other parts of the body.
II. Causes:
While the bacteria causing impetigo may have been caught from someone else with impetigo or boils, impetigo usually begins out of the blue without any apparent source of...

Bacteria: a benefit or a hazard?
Bacteria is something we are all reminded of on a daily basis by merely switching on our televisions where we are bombarded with advertisements for both ‘good’ and ‘bad’ bacteria. Contrary to the view of the past when only so-called ‘bad’ bacteria was ever talked about, so what has changed? This essay will address the facts about bacteria including methods used in identifying bacteria as well as looking at specific examples of how they can be both helpful and...

﻿The following show expected colony appearances and morphologies (shapes) of Escherichia coli and Staphylococcus aureus. Note characteristics such as edges, color, and whether the colonies are rough or smooth in texture.
For colony appearances of E. coli and S. aureus, scientists often describe what they look like on agar. This is not the microscopic view (for example, as with a slide) but a “naked eye” view of how the bacterial colonies look while growing on a medium. (This is one type of...

Abstract
Some bacteria are able to go through transformation making new combinations of genes. Transformation is a way of gene variability in bacteria. This experiment is based on the transformation mechanism of bacteria and gene regulation. The bacteria used for the experiment was Escherichia coli and the genes introduces for the transformation were: gfp and bla by a pGLO™ plasmid. After the insertion of the target genes and growing the bacteria on specialized LB media, it could be seen that...

Unknown Bacteria Lab Report
Introduction
The purpose to this lab was to identify an unknown bacteria from a mixed culture provided to us by our instructor. This study was done by applying all of the methods that have been instructed on thus far in microbiology laboratory class. Each test performed, provided us with some key information about the unknown organism in question and how the bacteria function.
Over a two week period, eight prepared types of test media were provided to...

1: The Microbial World and You
Learning Objectives Go Over First Lecture
1-1 List several ways in which microbes affect our lives.
1-2 Recognize the system of scientific nomenclature that uses two names: a genus and a specific epithet.
1-3 Differentiate the major characteristics of each group of microorganisms.
1-4 List the three domains.
1-5 Explain the importance of observations made by Hooke and van Leeuwenhoek.
1-6 Compare spontaneous generation and biogenesis.
1-7...

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Should Bacteria and Archaea belong to the
same Kingdom?
The main purpose of this essay is to find out if Archaea and Bacteria should be classified as two different Kingdoms or as a single one. As organisms, bacteria and archaea both are microscopic and prokaryotic (not possessing a true nucleus). These prokaryotes are very abundant on Earth and inhabit a wide spread of areas, including extreme ones. Both are an example of the most ancient living cells, which have appeared over 3.5 billion...

Viruses can infect all types of cells including plant, animal, protozoa, fungi, and bacteria. Virus composition is unique and does not resemble a living cell because they only contain the necessary parts to enter and leave an infected cell. A virus is a minute parasite (10 to 100 times smaller than bacteria) that is unable to reproduce by itself; however, once it infects a vulnerable cell a virus can make the cell’s inner workings produce viruses on its behalf. Viruses typically have either RNA...

﻿CHAPTER 4: THE ORGANIZATION OF LIFE
VOCABULARY LIST
DEFINE THE FOLLOWING TERMS FROM THE GLOSSARY:
ECOSYSTEM: a community of organisms and their abiotic environment.
BIOTIC FACTOR: an environmental factor that is associated with or results from the activities of living organisms (100)
ABIOTIC FACTOR: describes the non-living part of the environment, including water, rocks, light, and temperature.
ORGANISM: a living; anything that can carry out life...

Associate Program Material
Levels of Life Worksheet
Complete all three parts of this worksheet.
Part I: Atomic Structure – Fill in the missing information on atomic structure and organic compounds.
|Atomic Structure |
|Subatomic Particle |Charge |Location in an Atom |
|Proton...

Salmonella
· What is the infectious agent (pathogen) that causes this infectious disease? For example, the name of the bacteria, virus, or parasite.
Salmonella bacterium causes the Salmonellosis, which is a type of food poisoning. The most common types in the US are Salmonella serotype Typhimurium and Salmonella serotype Enteritidis.
· How is this infectious agent transmitted through food or water?
This disease can be transmitted through food that has been...

Bacteria’s Growth Affected by Various Glucose Percentages
This lab tested whether or not different glucose levels activated bacteria growth. My lab group and I wanted to figure out, if more glucose was spread on the bacteria plates, would there be more bacteria growth in the agar plate. My group predicted that with 25% glucose (the highest percentage of glucose), the bacteria growth would be the greatest. In order to conduct this experiment, my group had 3 ager plates. One plate had 0%...

1) Rhinovirus
- Enters to the upper respiratory tract which are primarily caused from via aerosols of respiratory droplets and from contaminated surfaces, including direct person to person contact.
- Cause of infections to the upper respiratory tract such as pharyngitis, sinusitis, and rhinitis.
- Can be treated with analgesic and antiseptic drugs, also antibiotic which can decrease unnecessary complication.
2) Escherichia Coli
- Enters the body through eating and drinking contaminated...

Bacteria Classification By Gram Staining
THE AMERICAN UNIVERSITY IN CAIRO
BIOLOGY DEPARTMENT
SCIENCE 453 : BIOLOGY FOR ENGINEERS REPORT No.1
Presented By : Karim A. Zaklama 92-1509 Sci. 453-01
24/2/96
Objective:
To test a sample of laboratory prepared bacteria and categorise it
according to Christian's gram positive and gram negative classes and also by
viewing it under a high powered microscope and oil immersions; classify its
shape and note any special characteristics.
Introduction:...

﻿The difference between bacteria, viruses, fungi and parasites are:
Bacteria are single celled organisms that can rapidly multiple themselves every 10 minutes up to 10 times each bacterial cell, but they do not live or reproduce in a human cell. When threatened they will make a copy of their DNA to enable them to come back to life in the right conditions. They are able to survive in most extreme living conditions including with and without oxygen, there are various types of bacteria such as...

The six characteristics of life are incorporated with bacteria in many ways. The first characteristic is the interaction with the environment. Bacteria interacts with the environment in many ways. It breaks down some garage, and maintains our atmosphere. Some bacteria have flagella which are hair-like appendages and they use them to swim around. Others have little particles of minerals that orient with the planet’s magnetic fields to help the bacteria figure out if they’re swimming up or down....

Lecture 14
Lecture
Gene Complementation in Bacteria
In order to perform tests for dominance or for complementation in bacteria we need a
way to make the bacteria diploid for part of the chromosome. To do this we need to
consider a different extrachromosomal element:
Ori T
The F plasmid
(length 105 base pairs)
Tra
genes
There are some special terms to describe the state of F in a cell: F– refers to a strain
without any form of F, whereas F+ refers to a strain with an F plasmid.
F,...

One purpose of this paper is to show the importance of biology in our everyday life. The subject of this paper is the cause and affects of micro-organisms that are in the human digestive system. Article of choice, (Adnan, 2010) Benefits of Microorganisms to Humans, Retrieved February 8, 2013. This article was of interest because there are many bacteria that we encounter in our daily lives and it was informative to know that all bacteria is not bad. In fact, there needs to be a balance between...

By: Milton Antwi
THE DIFFERENCES BETWEEN THE TWO MAIN TYPES OF BACTERIAL SPECIES
The core difference between a gram positive bacteria and gram negative bacteria is the differences in cell wall composition. Prokaryotes known as eubacteria have three basic forms: rods, cocci and spiral. The bacterial cell wall is the single most important contributor to cell shape. In addition to shape of cell wall, presence or absence of flagellum, and if present, positions of flagellum, the...

Application of lactic acid bacteria
There are four major categories for the current uses and applications of LAB: food, cosmetic, pharmaceutical, and chemical applications.
In food industry
Recent years the interest increased in using LAB by using bacteriocin-like inhibitory substances (BLIS) because of their potential use as a natural antimicrobial agent to enhance the food safety of food products and increase the nutritional values of the food. Foods that fermented by LAB such as...

Effects of Different Antibiotics on Bacteria
Because of their small size, rapid rate of reproduction, and relatively simple structure, bacteria are excellent subjects for laboratory studies. This investigation will introduce you to techniques of microbiology that will be of use to you throughout your biological work.
Procedure
1. Heat the test tubes of sterile agar medium in the water bath until the agar melts.
2. Remove the test tubes from the water bath. Let them cool enough to hold in...

Sarah Burns
Evolution of Plague Bacteria
The Bubonic Plague otherwise known as the Black Death, has gotten most of its attention from medieval paintings, poetry, and journals of revulsion. The real horror, was the disturbing biological evidence of the bacteria that caused all the pandemics, known as Yersinia pestis. The pathogen got its name from the two investigators Yersin and Kitasato. In 1894, Yersin was known as the main investigator (ergo. Named after him), he claimed that the mice/rats...

MBK – Lab Report Name: ___Melissa Callon _________________
Section: ___________________
Observing Bacteria and Blood
Questions:
@. A. List the following parts of the microscope and describe the function of each
1. Eyepiece: x10 or x15 lenses used to look through to view objects within the viewing field
2. Eyepiece Tube: holds the eyepiece
3. Main Tube: moves vertically for focusing
4. Coarse Adjustment: Used for the initial focusing of the viewing...

OBJECTIVE:
1. To distinguish the bacteria abilities to metabolize various substrates and end products formed.
2. To observe the growth of different bacteria species in term of structures and its morphology based on different chemical substance applied.
3. To observe physiological and immunological properties utilized by different species of bacteria.
INTRODUCTION:
Bacteria biochemical testing can determine the types and numbers in terms of colony forming units of bacteria...

INTRODUCTION
The enzyme catalase converts hydrogen peroxide (H2O2) to water and O2. The evolution of O2 causes bubbling. Thus, catalase-positive organisms that are mixed into hydrogen peroxide will cause bubbling (catalase-negative organisms will not). This test is good for distinguishing between Gram-positive cocci in chains (catalase negative) versus Gram-positive cocci in clusters (catalase positive).
The coagulase test is used to differentiate Staphylococcus aureus from...

The Identification of Two Unknown Species of Bacteria in Tube #72
Introduction:
There are many reasons for knowing the identity of microorganisms. The reasons range from knowing the causative agent of a disease in a patient, so as to know how it can be treated, to knowing the correct microorganism to be used for making certain foods or antibiotics. This study was done by applying all of the methods that have been learned so far in the microbiology laboratory class for the identification of...

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Antibiotic Resistant Bacteria
Brittany Reid
26 May 2014
BIO/101
Dr. Mittelstaedt
Antibiotic resistance is a type of resistance to the drug that doctors prescribe to people with a bacterial affection. Which means antibodies that are given to a person may not be enough to cure a bacterial affection due to “superbugs” which is a pathogen resistant to many different types of antibodies. This can be a huge problem because stuff that was commonly cured by antibiotic medicine...

Bathroom Handle Bacteria
Chelsea Schlauger
Working with Andie Shuck
Holly Downing
Biology Survey Lab 101
Bacteria are among the first forms of life on earth. There is an average there are 40 million bacterial cells in a gram of soil and a million in just a milliliter of fresh water. Even humans have bacteria inside their organs and on their skin. Not all bacteria are harmful; some bacteria types are helpful and necessary for survival. Bacteria are generally a few micrometers in length...

Oxygen Requirements of Bacteria
BACKGROUND
 The GasPak system is useful for culturing anaerobic bacteria on standard microbiological media because the GasPak generates carbon dioxide and hydrogen. The hydrogen will combine with oxygen present in an anaerobic jar to produce water. This system can reproducibly attain oxygen levels in the parts per million range if used correctly. This is the best method for determining the oxygen requirements of unknown organisms.
 A candle jar is...

﻿Cells
Now we need to discuss CELLS. You’ve probably heard of cells, and may even know of a few, such as blood cells, nerve cells, or skin cells. What are these things called cells?
Cells are the smallest living things. You’ll be learning a lot about cells in this course. For now, however, I'll introduce you to just a few basic things about them. Cells are extremely tiny organisms that carry out all of the functions of life inside a thin layer of “skin” called (unimaginatively) the CELL...

Some call it “horror” and some call it “the super germ”, but now, our always known “regular” bacteria, those one-celled creatures once considered under control with antibiotics, have invaded our hospitals and headlines with a vengeance. The vengeance used against us is caused by an existing organism called necrotizing fasciitis, the so-called flesh-eating bacteria, caused by Group A streptococcus. What this organism does is progressively destroy the human...

THE DETERMINATION OF ANTIBIOTIC SUSCEPTIBILITY WITH THE UTILIZATION OF BAUER-KIRBY DISK FUSION METHOD
INTRODUCTION:
The most common way of alleviating the specific symptoms arrived from diseases is to ingest antimicrobial drugs. Chemotherapeutical antimicrobial agents are chemical compounds intended to inhibit or kill rapidly dividing microorganisms. In order to derive an antimicrobial drug, different chemical compounds must be synthetically formed. Among these specific chemical compounds is...

Introduction
There are both virulent and non-virulent bacteria and fungi that grow on plants. It is difficult to distinguish between the two without proper inspection and diagnosis of the diseased plant to know whether the bacteria or the fungus in question is the virulent or non-virulent one. Therefore pure cultures need to be isolated to know with absolute certainty which is the causative bacteria or fungus.
Potato dextrose agar is a good nutrient agar for mycelia to thrive on which is...

Modern Day Example of Natural Selection –
Antibiotic Resistant Bacteria
Read pg 112 -113 & 275 – 277 of you text book.
Use this information plus information from secondary sources to answer the following questions so you will have a case study on antibiotic resistant bacteria. In this case study you will need to show how an environmental change can lead to a change in a species.
Note: this will also cover content in the Search for Better Health topic.
1. Outline the purpose of...

﻿Biology Research Task- Lucy Kerslake
What causes antibiotic resistance?
Antibiotic resistance occurs when an antibiotic is no longer effective against a particular bacteria, making that organism resistant to the effects of the antibiotic. Bacteria become resistant due to selective pressure. Those organisms which resist the antibiotic, and do not die from it's effects have a greater chance of survival within the host, therefore allowing them to reproduce and spread it's resistance to other...

In the world, some people see bacteria as something that is harmful and that causes nothing but illness and infections. Bacteria can actually be helpful as well. It can provide vitamins to your body, help digestion, destroy bad organisms, help make medicines and also help out with the environment. In this research paper, it will describe two bacteria that are helpful and sometimes harmful to humans and the environment, which are E. coli and Lactobacillus Acidophilus.
E. coli
E. coli is the...

Bacteria Cell Structure
They are as unrelated to human beings as living things can be, but bacteria are essential to human life and life on planet Earth. Although they are notorious for their role in causing human diseases, from tooth decay to the Black Plague, there are beneficial species that are essential to good health.
For example, one species that lives symbiotically in the large intestine manufactures vitamin K, an essential blood clotting factor. Other species are beneficial...

Antibiotic Resistant Bacteria
A better understanding of the use of antibiotics would help prevent the reality of antibiotic resistant bacteria evolving to the point of human extinction. Antibiotic resistance is a natural process, stronger bacteria survive and multiply. Even though antibiotic resistance is a natural process, it happens faster when antibiotics are used irresponsibly. Through use of media, personal responsibility and research, our species could help deter further antibiotic...

Bacteria are the most ancient life forms, most bacteria are so small that under a light microscope you can only see them as little dots. Some groups however grow to larger sizes and have spectacular shapes (1). Bacteria are present in most habitats on the planet, growing in soil, water, acidic hot springs, radioactive waste, and deep in the Earth's crust, as well as in organic matter and the live bodies of plants and animals (2). Bacteria is mostly thought of as a pathogen, while it is true that...

MBK – Lab Report Name: ____________________
Section: ___________________
Bacterial Morphology
Pg 61
Part 1: Viewing Prepared Slides of Common Bacterial Shapes
Familiarize yourself with each morphological type to use as a comparative tool for the remainder of the activity. Record your observations.
Part 2: Disinfecting Your Area to Use Live Organisms:
Part 3: Viewing Live Organisms – Wet Mount Preparation
Record your observations.
Part 4: Direct...

Tyler Fitzgerald
10/3/08
Science Fair Research Paper
The science project to be researched and experimented is whether bacteria can become resistant to antibacterial soaps. Bacteria will be grown in an agar broth containing .01%, .1%, .5% and 10% antibacterial soap. To fully understand the subject, information on everything necessary to conduct this experiment and comprehend the results was researched. Once the experiment is completed a conclusion will be able to be made as to...

Definition for antibiotic resistant bacteria:
WebMD definitions: Antibiotic resistance is a type of drug resistance where a microorganism is able to survive exposure to an antibiotic. Genes can be...
en.wikipedia.org/wiki/Antibiotic-resistant_bacteria
Antibiotics were designed to kill bacterium that infect us. Unfortunately, they are indiscriminate and also kill the good bacterium that are mostly found in the large intestinal tract. This leaves a person open to reinfection, or other more...

Title: Staining
Introduction:
Microorganisms are small and colorless, invisible to unaided eyes. When observing them under microscopes, we use various methods to make microbes apparent. One of the most important methods is staining. Staining techniques play an essential role in the studying of microorganisms; they help to reveal characteristics of microbes, such as their morphologies, sizes, arrangements, chemical components and many more. The purposes of the experiments are to...

· Taxonomy
○ Science of classification
○ Provides an orderly basis for the naming of organisms and for placing organisms into a category (taxon)
○ Makes use of and makes sense of the fundamental concepts of unity and diversity among living things
○ Basic principle is that members of higher-levels groups share fewer characteristics than those in lower-level groups
* Escherichia coli - rod shape and have a Gram-negative cell wall
* Even members of the same species display...

NTRODUCTION
Often in the study of microbiology, the need to identify an unknown microbe may arise. This aids in the recognition of which microbes are harmful or pathogenic as well as those that may be beneficial to us in some way. This report will detail how a similar project was performed in order to identify two unknown micobes using the techniques that were learnt during the course of the semester. We embarked on the project with the knowledge that we would have to identify a Gram(+) as...

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Bacteria Morphology
April 2, 2015
Abstract – The Purpose of this exercise is to gain experience in bacterial morphologies in prepared wet-mounted slides and interpreting the findings of bacteria through direct and indirect staining technique.
Hypothesis – The experiment will allow for further insight into stained organisms, allowing extended contrast, differentiating shape and structure through utilization of microscope.
Procedure – Instructions followed as per...

What are bacteria?
Bacteria are very different from viruses. First of all, bacteria are much larger in size. The largest virus is only as big as the very smallest bacterium (singular for bacteria). But bacteria are still microscopic and cannot be seen with the naked eye. They are so small that the sizes of bacteria are measured in micrometers (10,000 micrometers = 1 centimeter). By comparison, the head of a pin is about 1000 micrometers wide. Though more complex than a virus, the structure of...

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Identification of Unknown # 15
Abstract. One of the most fundamental differential staining techniques used in the study of bacteriology is gram staining. There are two main types of bacteria, gram negative and gram-positive. The purpose of this experiment was to perform a variety of tests to identify the bacteria contained in the unknown sample labeled number 15. The following are the tests that were used...

Questions
A. Define the following terms:
1. Monotrichous
2. Amphitrichous
3. Lophotrichous
4. Peritrichous
B. What are the three commonly used techniques to test motility?
C. Why are semi-solid media used to test for motility?
D. Why might it be difficult to observe motility in a wet mount?
E. Why is it important to use a needle rather than an inoculating loop when inoculating a motility
tube?
F. For which of the organisms on the wet mount, if any, were you able to observe motility?...

Aseptic Technique & Culturing Microbes
Purpose: To learn and employ aseptic technique and basic forms of culture media as well as become familiar with the basic requirements of microbial growth and the methods used to control microbial growth.
Procedure: Obtained a small Styrofoam cooler placed two small light bulbs in side and observed temperature over 24 hours to ensure temperature could be maintained between 98-100 degrees. Using a 10% bleach solution I then cleaned my work area....

Microbiology Sec 147848
November 18, 2013
Title of the Experiment: Enterobacteriaceae Identification: The Enterotube II System
Learning Objectives: After completing this exercise we were able to inoculate an unknown bacterium that belongs to the Enterobacteriaceae by using technology effectively with a Enterotube II. An Enterotube II is a miniaturized multi-test system for rapid identification of enterbacteriaceae. We then evaluated the test results and generated a five-digit code for...

Anna Wencel II IB
|LAB REPORT |
|Factors affecting the growth of bacteria |
Introduction: Bacteria make up a large domain of prokaryotic microorganisms. And how can be bacteria destroyed? Antibiotics are widely used in the prevention and treatment of infectious diseases....

This webquest will help you understand what bacteria and viruses are and how they affect us.
In your own words, describe what bacteria are:
Bacteria are single celled organism that creates sickness in organisms
Bacteria Basics:
http://biology.clc.uc.edu/courses/bio106/bacteria.htm http://en.wikipedia.org/wiki/Bacterial_cell_structure
Bacteria have three possible shapes. Name each shape and draw a picture of each.
How do bacteria get their energy? Bacteria get their energy by the...

﻿Francesca Firmin
256 – Causes and spread of infection
1. – Understand the cause of infection.
1.1 – Identify the differences between bacteria, viruses, fungi and parasites.
Answer to 1.1 – The difference between bacteria, viruses, fungi and parasites are:
Bacteria – Bacteria is a single celled organism, bacteria have evolved to be in any environment and can be found in any substance/surface and also in the human body, only 1% of bacteria is actually harmful. It’s bad or infectious bacteria...

﻿The effect of bacteria on the lives of humans and other organisms
Bacterial cells are prokaryotic as they do not have a nucleus. They consist of cytoplasm, a plasma membrane, cell wall, and covered in a capsule. Genetic material not surrounded by nuclear envelope. Circular chromosome in cytoplasm Only organelle is ribosomes.
Pathogens and Disease
Many bacteria release toxins, endoxtoxins are released by bacteria as they grown.
Bacteria are small, easily dispersed and quickly multiply in...